Structure, Order and Function Flashcards
What is interstitial fluid
The extracellular fluid that lies outside the blood vessels and bathes the cells (10.4L)
What formula do you use to calculate body fluid compartments
Volume (V) = Mass (M) / Contraction (C)
What is osmolarity
moles per litre of a solution
what is osmolality
moles per kg of water
What is osmotic pressure
one gram mole of a non-dissociating substance in 1kg of water exerts an osmotic pressure of 1 osmole
What is osmotic pressure
one gram mole of a non-dissociating substance in 1kg of water exerts an osmotic pressure of 1 osmole
What is the equation for calculating osmotic pressure
Osmotic Pressure = MRT
M = Molarity
R = Gas Constant (0.08206)
T = Thermodynamic temperature/absolute temperature
What is an iso-osmotic solution
two solutions with the same osmolality
What is an isotonic solution
when the intracellular fluid has the same osmolality as the extracellular fluid
What happens to cells in a hypertonic solution
water moves out of the cells
What happens to cells in a hypertonic solution
water moves out of the cells
cells crinate
What happens to cells in a isotonic solution
Water movement into and out of the cell is in equilibrium
What happens to cells in a hypotonic solution
water moves into the cells
Cells burst due to increased water volume in the cell
What is osmosis
the net movement of water through a semi-permeable membrane from a solution of low osmolarity to a solution of high osmolarity
What is the molar concentration
the number of moles ion that substance in a litre
